[Federal Register Volume 89, Number 218 (Tuesday, November 12, 2024)]
[Proposed Rules]
[Pages 88906-88908]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-26128]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
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Federal Register / Vol. 89, No. 218 / Tuesday, November 12, 2024 /
Proposed Rules
[[Page 88906]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2408; Project Identifier AD-2024-00362-T]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain The Boeing Company Model 747-400, 747-400F, 747-8F, and
747-8 series airplanes. This proposed AD was prompted by a report that,
during potable water servicing, there were multiple engine indicating
and crew alerting system messages. The cause was the separation of a
fitting and steel water supply tube above an electronics equipment
cooling air filter, behind the forward cargo compartment left sidewall.
This proposed AD would require, depending on configuration, installing
at certain locations: conduits on exposed potable water supply lines,
envelope assemblies over all exposed potable water line fittings and
exposed potable water supply lines, a slitted spray shield, a 2-piece
deflector shield around the equipment cooling system air inlet, and/or
a shroud on exposed potable water supply lines. The FAA is proposing
this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by December
27, 2024.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to regulations.gov. Follow
the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2024-2408; or in person at Docket Operations between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD
docket contains this NPRM, any comments received, and other
information. The street address for Docket Operations is listed above.
Material Incorporated by Reference:
For the Boeing material identified in this proposed AD,
contact Boeing Commercial Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA
90740-5600; telephone 562-797-1717; website myboeingfleet.com.
You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th St., Des
Moines, WA. For information on the availability of this material at the
FAA, call 206-231-3195. It is also available at regulations.gov under
Docket No. FAA-2024-2408.
FOR FURTHER INFORMATION CONTACT: Courtney Tuck, Aviation Safety
Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-
231-3986; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2024-2408;
Project Identifier AD-2024-00362-T'' at the beginning of your comments.
The most helpful comments reference a specific portion of the proposal,
explain the reason for any recommended change, and include supporting
data. The FAA will consider all comments received by the closing date
and may amend this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
regulations.gov, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Courtney Tuck, Aviation Safety Engineer, FAA, 2200 South 216th St., Des
Moines, WA 98198; phone: 206-231-3986; email: [email protected].
Any commentary that the FAA receives that is not specifically
designated as CBI will be placed in the public docket for this
rulemaking.
Background
The FAA has received a report indicating that during potable water
servicing on a Model 777 freighter airplane, there were multiple engine
indicating and crew alerting system messages. The cause was the
separation of a fitting and steel water supply tube above an
electronics equipment cooling air filter, behind the forward cargo
compartment left sidewall. Water from the soaked filter was
subsequently sprayed by the equipment cooling system onto multiple line
replaceable units in the main electronics center. Due to similar
designs to the Model 777 freighter airplanes, Boeing developed a
precautionary solution for Model 747-400, 747-400F, 747-8F, and 747-8
airplane configurations having potable water supply lines and
connections near
[[Page 88907]]
the equipment cooling supply (ECS) air inlet. The solution includes
installing shrouding around the potable water lines and conduits near
the ECS air equipment the electrical equipment cooling duct to collect
any water leaks and allow collected water to flow gravitationally away
and at a safe distance from the ECS air inlet and the electronic
equipment cooling duct to the floor of the airplane, preventing water
leaks into the main electronics center. This condition, if not
addressed, could result in an adverse impact on the function of
multiple electronics and line replaceable units (LRUs) in the equipment
bay racks that are essential for safe flight, which can lead to the
loss of continued safe flight and landing.
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin 747-38A2146 RB,
dated August 7, 2024. This material specifies procedures for, depending
on configuration, installing: conduits on exposed potable water supply
lines between station (STA) 580 and STA 650, between STA 575 and STA
650, or between STA 595 and STA 650, as applicable; envelope assemblies
over all exposed potable water line fittings and exposed potable water
supply lines between STA 650 and STA 660, between STA 640 and STA 660,
between STA 570 and STA 580, between STA 570 and STA 580 and between
STA 650 and STA 660, between STA 580 and STA 600 and between STA 650
and STA 660, or between STA 580 and STA 600, as applicable; a slitted
spray shield; a 2-piece deflector shield around the ECS air inlet STA
610; a spray shield; and/or a shroud on exposed potable water supply
line between STA 550 and STA 680.
This material is reasonably available because the interested
parties have access to it through their normal course of business or by
the means identified in the ADDRESSES section.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in the material already described, except for any differences
identified as exceptions in the regulatory text of this proposed AD.
For information on the procedures and compliance times, see this
material at regulations.gov under Docket No. FAA-2024-2408.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 178 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product Cost on U.S. operators
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Installations............. Up to 22 work- Up to $4,980..... Up to $6,850..... Up to $1,219,300.
hours x $85 per
hour = Up to
$1,870.
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this proposed AD may be covered under warranty, thereby reducing the
cost impact on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
The Boeing Company: Docket No. FAA-2024-2408; Project Identifier AD-
2024-00362-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by December 27, 2024.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 747-400, 747-400F,
747-8F, and 747-8 series airplanes, certificated in any category, as
identified in Boeing Alert Requirements Bulletin 747-38A2146 RB,
dated August 7, 2024.
(d) Subject
Air Transport Association (ATA) of America Code 38, Water/waste.
[[Page 88908]]
(e) Unsafe Condition
This AD was prompted by a report that, during potable water
servicing, there were multiple engine indicating and crew alerting
system messages. The cause was the separation of a fitting and steel
water supply tube above an electronics equipment cooling air filter,
behind the forward cargo compartment left sidewall. The FAA is
issuing this AD to address water leaks into the main electronics
center. The unsafe condition, if not addressed, could result in an
adverse impact on the function of multiple electronics and line
replaceable units (LRUs) in the equipment bay racks that are
essential for safe flight, which can lead to the loss of continued
safe flight and landing.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Except as specified by paragraph (h) of this AD: At the
applicable times specified in the ``Compliance'' paragraph of Boeing
Alert Requirements Bulletin 747-38A2146 RB, dated August 7, 2024, do
all applicable actions identified in, and in accordance with, the
Accomplishment Instructions of Boeing Alert Requirements Bulletin
747-38A2146 RB, dated August 7, 2024.
Note 1 to paragraph (g): Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
747-38A2146, dated August 7, 2024, which is referred to in Boeing
Alert Requirements Bulletin 747-38A2146 RB, dated August 7, 2024.
(h) Exception to Requirements Bulletin Specifications
Where the Compliance Time columns of the tables in the
``Compliance'' paragraph of Boeing Alert Requirements Bulletin 747-
38A2146 RB, dated August 7, 2024, refer to the original issue date
of Requirements Bulletin 747-38A2146 RB, this AD requires using the
effective date of this AD.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, AIR-520, Continued Operational Safety Branch,
FAA, has the authority to approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19. In accordance with 14
CFR 39.19, send your request to your principal inspector or
responsible Flight Standards Office, as appropriate. If sending
information directly to the manager of the certification office,
send it to the attention of the person identified in paragraph
(j)(1) of this AD. Information may be emailed to: [email protected].
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) An AMOC that provides an acceptable level of safety may be
used for any repair, modification, or alteration required by this AD
if it is approved by The Boeing Company Organization Designation
Authorization (ODA) that has been authorized by the Manager, AIR-
520, Continued Operational Safety Branch, FAA, to make those
findings. To be approved, the repair method, modification deviation,
or alteration deviation must meet the certification basis of the
airplane, and the approval must specifically refer to this AD.
(j) Related Information
(1) For more information about this AD, contact Courtney Tuck,
Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA
98198; phone: 206-231-3986; email: [email protected].
(2) Material identified in this AD that is not incorporated by
reference is available at the address specified in paragraph (k)(3)
this AD.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the material listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless the AD specifies otherwise.
(i) Boeing Alert Requirements Bulletin 747-38A2146 RB, dated
August 7, 2024.
(ii) [Reserved]
(3) For Boeing material identified in this AD, contact Boeing
Commercial Airplanes, Attention: Contractual & Data Services (C&DS),
2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600;
telephone 562-797-1717; website myboeingfleet.com.
(4) You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th St.,
Des Moines, WA. For information on the availability of this material
at the FAA, call 206-231-3195.
(5) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].
Issued on November 5, 2024.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2024-26128 Filed 11-8-24; 8:45 am]
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